Federal Reserve Bank of Chicago. "May 1949," Business Conditions (Federal Reserve Bank of Chicago) (May 1949). https://fraser.stlouisfed.org/title/5562/item/540035, accessed on March 19, 2024.
Federal Reserve Bank of Chicago. "May 1949," Business Conditions (Federal Reserve Bank of Chicago) (May 1949). https://fraser.stlouisfed.org/title/5562/item/540035, accessed on March 19, 2024.